tgesele(at)optonline.net
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 Posted: Sun Feb 19, 2006 1:03 pm Post subject: DRDT-2 Dimpler - Follow Up |
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Listers,
I'd like to follow up on my post yesterday regarding the DRDT-2 and the
issue I had with needing to "double pump" to get good dimples in thicker
skins.
Based on some suggestions from Paul at ExperimentalAero, I went back and
tried dimpling 040 scraps with both 1/8" and 3/32" tank dies and each one
produced a perfect dimple first shot - no double pumping required, tried the
regular 3/32" dies and same problem - needed two shots to get the dimple
right.
I initially assumed that there was something wrong with the dimple dies
but that didn't seem right so I went back down to the shop today to figure
out what was going on. I won't waste space detailing everything I did, but
it turned out that the body of the 3/32" dimple dies had a very slight
difference in size. I had initially set up the dimpler using the tank dies
(which I use to dimple all the underlying ribs, spars, etc) and never
re-adjusted it for the other dies. I fabricated a 020 spacer that now sits
on the 3/32" die, tried it out and the results are perfect dimples across
the board - no double pumping required.
I'd like to repeat how impressed I am with the DRDT-2 and now with Paul's
support. For me, this was a complete non-issue but brought an immediate
offer from Paul to assist in any way he could to help fix the "problem".
- Tom Gesele #473
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